Gaya APA
Barzun, Jacques. (1977).
The Modern researcher .
San Diego:
HBJ.
Gaya Chicago
Barzun, Jacques.
The Modern researcher.
San Diego:
HBJ,
1977.
Printing.
Gaya MLA
Barzun, Jacques.
The Modern researcher.
San Diego:
HBJ,
1977.
Printing.
Gaya Turabian
Barzun, Jacques.
The Modern researcher.
San Diego:
HBJ,
1977.
Printing.